2 
2 PC randomly shut down and won't turn on
So 3 days ago, we experienced 2 low voltages of electricity in our area in a span of 5-10 minutes. I was browsing with my pc when this happened. After that was a 28-hour long blackout. After the lights are back on, we were assured that the low voltages and blackouts are not to happen again. I hopped on my PC, used it for about 30 minutes to an hour, and it just shut down randomly. I can't power it back on, screen shows no connection.
I first assumed it was the PSU so I looked up on how to test if the PSU is dead or not. I tried to Jumpstart the PSU, its fan spins for about 1 second and turns off completely again. I was a little relieved knowing it wasn't the motherboard or any other components that were damaged (atleast hopefully they weren't damaged from the dead PSU, assuming that the PSU really is dead). I ordered a new PSU that would arrive in about a week or so. Unfortunately, I don't have any extra PSUs or someone that I can borrow a PSU to test with.
The day after, I tried to Jumpstart the PSU again, but this time, it seems to be working and its fan spins continuously. I tried to plug it with the motherboard again, but doesn't work when doing so. It was weird because yesterday, it didn't work when jumpstarted, but now it does? Can a PSU work when jumpstarted but not when it's with a motherboard? Maybe it just cant produce enough power for the motherboard? I'm a little worried the motherboard might be the problem, I don't have any cash to replace that right now, and the PSU I ordered might be just a waste of money.
A little information I can add is that the Bluetooth USB glows when plugged indicating that it's receiving power, but the PSU or everything else doesn't.
Anyone know what the most probable problem might be?
PC specs are:
Ryzen 5 4600g not OC'd
Rx 580
EVGA 450w
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Hi @roeldocto,
What is the make and model number of the motherboard?
Use the paperclip test to check if all the voltages being produced by the PSU are the correct value.
из jayeff
Hello @jayeff
The Motherboard is the Gigabyte B550m ds3h
I have actually tried to Jumpstart the PSU using a paperclip and the results were a little weird. I dont know if the voltages it produces are the correct value since i dont exactly know what you meant by that, the only information I can give for this is:
The first time I tried to Jumpstart the PSU was around a week ago, it didnt work. Its fan spun for a split second before stopping. Ive now ordered a new PSU thatll arrive tomorrow.
Butcomes the weird part. The day after the first Jumpstart, I decided to do it once again. After jumpstarting, it turned on and the fan spins consistently. tested it with the motherboard, doesnt turn on. I hear 2 clicks from the PSU in a span of 2 seconds when jumpstarting the mobo.
Someone I know told me that if a PSU starts with a paperclip doesnt mean it still works so ive concluded that the PSU doesnt deliver enough power to the whole PC hence the PC doesnt turn on but turns on when jumpstarted with a paperclip.
из Roel Docto